Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/80-17 | 255/85-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.06 (839.8) | 34.07 (865.3) | 1 (25.5) 3% |
| Width inches (mm) | 10.04 (255) | 10.04 (255) | 0 (0) 0% |
| Circum. inches (mm) | 103.87 (2638.31) | 107.02 (2718.42) | 3.15 (80.11) 3% |
| Sidewall Height inches (mm) | 8.03 (204) | 8.53 (216.75) | 0.5 (12.75) 6.3% |
| Revolutions per mile (km) | 609.99 (379.03) | 592.01 (367.86) | -17.98 (-11.17) -2.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.61 mph (33.16 km/h) |
| 25 mph (40.23 km/h) | 25.76 mph (41.46 km/h) |
| 30 mph (48.28 km/h) | 30.91 mph (49.75 km/h) |
| 35 mph (56.33 km/h) | 36.06 mph (58.04 km/h) |
| 40 mph (64.37 km/h) | 41.21 mph (66.33 km/h) |
| 45 mph (72.42 km/h) | 46.37 mph (74.62 km/h) |
| 50 mph (80.47 km/h) | 51.52 mph (82.91 km/h) |
| 55 mph (88.51 km/h) | 56.67 mph (91.2 km/h) |
| 60 mph (96.56 km/h) | 61.82 mph (99.49 km/h) |
| 65 mph (104.61 km/h) | 66.97 mph (107.78 km/h) |
| 70 mph (112.65 km/h) | 72.13 mph (116.07 km/h) |
| 75 mph (120.7 km/h) | 77.28 mph (124.37 km/h) |
| 80 mph (128.75 km/h) | 82.43 mph (132.66 km/h) |
| 85 mph (136.79 km/h) | 87.58 mph (140.95 km/h) |
| 90 mph (144.84 km/h) | 92.73 mph (149.24 km/h) |
| 95 mph (152.89 km/h) | 97.88 mph (157.53 km/h) |
| 100 mph (160.93 km/h) | 103.04 mph (165.82 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1507 | 1750 | 1885 | 1968 | 2058 | 2122 | 2193 | 2276 | 2391 | 2507 | 2635 | 2737 | 2923 | 3129 | 3289 | 3391 | 3449 | 3661 | 3956 | 4597 |
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